Extensions by Name

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*cloud - FileLink for Nextcloud and ownCloud Featured

Upload large attachments to your Cloud and send the link by email

Rated 5 out of 5 stars (50)
34,567 users

.vcs Support Requires Restart

Import and export calendar files in vCalendar (.vcs) format

Rated 3 out of 5 stars (18)
17 users

10ten Japanese Reader (Rikaichamp)

Look up Japanese words with the hover of a mouse.

After enabling the add-on from the toolbar (or press Alt+R) simply hover over Japanese text and a popup displays corresponding dictionary definitions.

Rated 5 out of 5 stars (4)
216 users

3e Calendar Requires Restart

Adds support for 3e calendars

Rated 1 out of 5 stars (1)
2 users

@Contact Mention

This add-on mimics the mentions behavior on Outlook when mentioning a contact with the '@' sign. The contact selected is added as a link in the email body as well as to the recipent list of the email.

Rated 4 out of 5 stars (9)
1,099 users

A Better S/MIME GUI Requires Restart

Provides a better S/MIME GUI for Thunderbird.

Rated 3 out of 5 stars (2)
1 user

AastraClickToCall Requires Restart

Converts telephone numbers into clickable links for use with Aastra IP Phones

Not yet rated
0 users

About Home Themer

Enables theming of the About:Home page by providing a simple redirect

Rated 5 out of 5 stars (2)
0 users

About Startup

Displays startup timings

Rated 4 out of 5 stars (14)
1 user

About:about Button

A button that lists all the about pages that exist. Some of these pages are also provided as separate buttons.

Rated 3 out of 5 stars (4)
3 users

about:config Button

Open about:config to change hidden settings that cannot be edited from the Options window. All Mozilla based programs have settings that can not be changed in the options window.

Rated 5 out of 5 stars (5)
18 users

about:kittens Requires Restart

Baby cats and kittens in the about box...

Rated 5 out of 5 stars (6)
0 users

about:support Requires Restart

A Mozilla Messaging addon to assist in product support.

Rated 4 out of 5 stars (4)
1 user

AboutConfig Requires Restart

about:config for...

Rated 3 out of 5 stars (13)
0 users

Account Check

Checks account settings against those listed in the Thunderbird autoconfig database and offers to fix settings that don't match. This is the same check performed when setting up an account.

Not yet rated
10 users

Account Colors Requires Restart

Associates user-defined colors with POP3/IMAP accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.

Rated 4 out of 5 stars (174)
3,264 users

Account Manager Toolbar Button Requires Restart

This is a small devision of Toolbar Buttons https://addons.mozilla.org/firefox/2377/ or
http://codefisher.org/toolbar_button/

Not yet rated
0 users

accountex Requires Restart

Export/Import Account Settings.....

Rated 3 out of 5 stars (26)
3 users

acus

Update 2023: This addon will be replaced by "arcus".

Modern encryption in Thunderbird

** Currently in testing phase **
What you can do:
1. Set your secret key and automatically decrypt emails
2. Generate a new key pair
3. Encrypt plain text

Not yet rated
4 users

Add Birthdays To Calendar Requires Restart

Birthdays from addressbook-contacts will be added as events to Lightning...

Rated 3 out of 5 stars (20)
0 users